Clear the direction flag in interrupt/exception handlers' assembly entry code before calling C functions to follow the UEFI calling convention.

Signed-off-by: rsun3
Reviewed-by:  jyao1


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11664 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3
2011-05-16 06:10:42 +00:00
parent e332b442b9
commit ad8cbf7197
4 changed files with 16 additions and 4 deletions

View File

@@ -1,7 +1,7 @@
;/** @file
; Low leve IA32 specific debug support functions.
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
@@ -363,6 +363,9 @@ CommonIdtEntry::
; They MUST be. If they are not, a GP fault will occur.
FXSTOR_EDI
;; UEFI calling convention for IA32 requires that Direction flag in EFLAGs is clear
cld
;; UINT32 ExceptionData;
mov eax, ExceptData
push eax